package v1.chapter9.set;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Scanner;
import java.util.Set;

public class SetTest {

	public static void main(String[] args) {
		Set<String> words = new HashSet<>();
		long totalTime = 0;

		try (Scanner in = new Scanner(System.in)) {
			while (in.hasNext()) {
				String word = in.next();

				long callTime = System.currentTimeMillis();
				words.add(word);

				callTime = System.currentTimeMillis() - callTime;
				totalTime += callTime;
			}
		}

		Iterator<String> iter = words.iterator();
		for (int i = 1; i <= 20 && iter.hasNext(); i++) {
			System.out.println(iter.next());
		}
		System.out.println(". . .");
		System.out.println(words.size() + " distinct words. " + totalTime + " milliseconds.");
	}
}
